An information processing apparatus includes a first parity production section for producing a first error detection code for detecting an error of data. A second parity production section produces a second error detection code for detecting an error of the data from the first error detection code. A first parity checking section detects an error of the retained data as a first error using the retained first error detection code. A second parity checking section detects an error of the retained data as a second error using the retained second error detection code. A control amount outputting section outputs, when an occurrence rate of a first error is equal to or lower than a first threshold value, a control amount for controlling a power supply voltage or a frequency using a second threshold value as a target value for an occurrence rate of a second error.